Fuse.



Rt H. S. BACON 6L J. H. MANSELL.

FUSE.

APPLICATIGN FILED MAR. 23. 19l5.

Patented Nov. 23, 1915.

ED STATES `1 ATENT oFFIcE.

REGINALD HUG-H SPENCER BACON AND JOHN HERBERT MANSELL, 0F COVENTRY, ENGLAND, ASSIGNOBS T0 THE COVENTRY ORDNANCE WORKS, LIMITED, 0F

C0VIEIJQVIBIY,l ENGLAND.

FUSE.

Specification of Lettersnlaitent. Patented Nov. 1915.

Application led March 23, 1915. Serial No. 16,528.

certainty the charge of the Shell and shall also be safe to handle.

Our invention is illustrated by the accompanying drawing which is a longitudinal section through a fuse.

a is the body of the fuse containing time rings b and a percussion pellet c of ordinary construction. Into the body screws a strong steel gaine d into which gaine is screwed a diaphragm e. In front of this is a charge f of high explosive such as trinitro'phenyl-- methylnitramin or tetryl as it is more conveniently called, in the middle of which are pellets g of powder. In front of this is a Wad h which is kept in place by the screw plug 'i through which is formed a passage to enable the ash from the percussion or time arrangements to reach the pellets g. In front of this again is another plu y' containing a centrifugal safety bolt c in ront of which is a copper cup Z which normally closes the passage. A Behind the diaphragm eis a larger charge of high explosive such as tetryl, the front portion being formed of loose explosive m while the rear portion is composed of' compressed explosive n, the two being separated by a wad o and held in place by a lug enpthe shell has been fired centrifugal action'causes the bolt 7c to move outward so cup Z the latter is forced into the space previously occupied by the bolt kand the Hash then passes down the passage in the plug z' and ignites the pellets g which explode the small charge ffthe explosion of this is sufficient` to perforate the diaphragm e and to detonate the larger charge of high explosive in the rear of the gaine, the detonation of this in turn being sufficient to explode the charge of the shell.

What we claim is y 1. In a shell fuse the combination of a gaine, a solid, transverse diaphragm therein, a charge of high explosive in vfront of the diaphragm, a larger charge of high explosive in rear of the diaphragm and means for exploding the flrst mentioned charge.,

2. In a shell fuse the combination of a gaine, a solid, transverse diaphragm therein, a charge of high explosive in front of the diaphragm, a chargel of high explosive in rear of the diaphragm such charge being composed of a front'portion of loose explo-V sive and a rear portion of compressed explosive, and means for exploding the first mentioned charge.

3. In a shell fuse the combination of a gaine, a solid, transverse diaphragm therein, a charge of high explosive in front of the diaphragm, a powder charge in the interior of such charge, a charge of high explosive in rear of the diaphragm and means for exploding the powder.

REGINALD HUGH SPENCER BACON. JOHN HERBERT MANSELL.'

Witnesses:

WILLIAM J. DAVIS, ARTHUR B. INs'roNE. 

